Acting on specific information, the police launched a search operation in Borbadha village and an encounter took place in which the militant was seriously injured, police spokesman said.
The seriously injured militant was rushed to the Gossaigaon Civil Hospital where he succumbed to his injuries.
The militant has been identified as Ram Hemrom alias Lasar and a 7.65 pistol, two hand grenades, two rounds of live ammunitions and two blank cartridges were recovered from the encounter spot, the spokesman added.
The linkman has been identified as Babul alias Jan Dihingia and Rs 7.50 lakh in cash and an SUV has been recovered fromhis possession.